BACKGROUND Atrial fibrillation(AF)is a prevalent cardiac arrhythmia associated with significant morbidity and mortality,particularly in patients with concomitant renal dysfunction.Anticoagulation therapy reduces the r...BACKGROUND Atrial fibrillation(AF)is a prevalent cardiac arrhythmia associated with significant morbidity and mortality,particularly in patients with concomitant renal dysfunction.Anticoagulation therapy reduces the risk of thromboembolic complications in AF but presents challenges in patients with renal impairment due to altered pharmacokinetics and increased bleeding risk.AIM To support clinicians in navigating the complexities of anticoagulation in this high-risk population,ensuring optimal outcomes.METHODS The present review followed PRISMA guidelines.Data extraction was conducted using a standardized template that captured key study characteristics:Population demographics,renal function metrics,anticoagulant dosing strategies,and primary and secondary outcomes.For quality assessment,we employed the Cochrane Risk of Bias 2.0 tool for randomized controlled trials.Observational studies were appraised using the Newcastle-Ottawa Scale.RESULTS We analyze data from 16 studies to provide recommendations on optimal anticoagulation strategies,balancing thrombotic and bleeding risks.Current evidence supports the preferential use of apixaban in moderate chronic kidney disease and cautiously in end-stage renal disease,emphasizing the importance of individualized therapy.CONCLUSION The management of anticoagulation in AF patients with renal dysfunction is challenging but critical for reducing stroke risk.展开更多
BACKGROUND The risk and mortality rate of venous thromboembolism(VTE)following gastrointestinal surgery remain high,and the symptoms are atypical.Therefore,it is necessary to identify the risk factors associated with ...BACKGROUND The risk and mortality rate of venous thromboembolism(VTE)following gastrointestinal surgery remain high,and the symptoms are atypical.Therefore,it is necessary to identify the risk factors associated with the occurrence of VTE following gastrointestinal surgery and to implement appropriate prevention and treatment measures.AIM To assess the efficacy of perioperative anticoagulation for the prevention of postoperative VTE.METHODS This retrospective study enrolled 205 patients who underwent gastrointestinal surgery.In the observation group(n=101),prophylactic anticoagulation was administered via hypodermic injection of low-molecular-weight heparin during the perioperative period,whereas the control group(n=104)only received lowmolecular-weight heparin treatment postoperatively.Blood coagulation parameters and the incidence of VTE of the bilateral lower limbs pre-and post-surgery were compared between groups.Postoperative VTE was transformed into a dichotomous variable,and influencing factors were explored using multivariate logistic regression analyses.RESULTS On the 7th day postoperatively,the incidence of VTE of the bilateral lower limbs was significantly lower in the observation group than in the control group,as were the D-dimer levels(P<0.05).At 1 month postoperatively,the incidence of VTE was significantly lower in the observation group than in the control group(P<0.05).An age≥65 years,a body mass index≥24 kg/m^(2),and malignant diseases of the digestive system were identified as risk factors for the occurrence of postoperative VTE in patients undergoing gastrointestinal surgery.CONCLUSION The incidence of VTE in patients who underwent gastrointestinal surgery peaked within 1 week postoperatively.The findings confirmed perioperative anticoagulation can safely and effectively reduce the incidence of postoperative VTE.展开更多
The management of acute coronary syndrome(ACS)in older patients remains challenging because standard anticoagulants often fail to yield optimal outcomes.Bivalirudin,a direct inhibitor of thrombin,serves as an alternat...The management of acute coronary syndrome(ACS)in older patients remains challenging because standard anticoagulants often fail to yield optimal outcomes.Bivalirudin,a direct inhibitor of thrombin,serves as an alternative to traditional therapies.This drug is particularly effective in enhancing myocardial microcircu-lation and reducing adverse events after clinical interventions.The present article explores the findings of a recent study that highlighted the clinical benefits of bivalirudin by investigating its effects on myocardial microcirculation and adverse cardiac events after percutaneous coronary intervention in older patients with ACS.Compared with unfractionated heparin,bivalirudin markedly reduced the emergency response time and improved cardiac function indicators.It further mitigated the risks of cardiovascular events and recurrent myocardial infarctions.These findings suggest that bivalirudin can enhance myocardial perfusion and reduce bleeding complications,thus serving as a safe,effective anticoagulation agent for older patients with ACS.Nonetheless,further large-scale,high-quality trials are needed to establish optimal usage guidelines and assess long-term outcomes.Integrating bivalirudin into ACS treatment protocols for older patients may help optimize patient care,balancing efficacy and safety.Continual research and consensus building are necessary for the widespread clinical application of bivalirudin and the improvement of ACS outcomes in older patients.展开更多
BACKGROUND Up to one-third of patients undergoing transcatheter aortic valve replacement(TAVR)have an indication for oral anticoagulation(OAC),primarily due to underlying atrial fibrillation.The optimal approach conce...BACKGROUND Up to one-third of patients undergoing transcatheter aortic valve replacement(TAVR)have an indication for oral anticoagulation(OAC),primarily due to underlying atrial fibrillation.The optimal approach concerning periprocedural continuation vs interruption of OAC in patients undergoing TAVR remains uncertain,which our meta-analysis aims to address.AIM To explore safety and efficacy outcomes for patients undergoing TAVR,comparing periprocedural continuation vs interruption of OAC therapy.METHODS A literature search was conducted across major databases to retrieve eligible studies that assessed the safety and effectiveness of TAVR with periprocedural continuous vs interrupted OAC.Data were pooled using a random-effects model with risk ratio(RR)and their 95%confidence interval(CI)as effect measures.All statistical analyses were conducted using Review Manager with statistical significance set at P<0.05.RESULTS Four studies were included,encompassing a total of 1813 patients with a mean age of 80.6 years and 49.8%males.A total of 733 patients underwent OAC interruption and 1080 continued.Stroke incidence was significantly lower in the OAC continuation group(RR=0.62,95%CI:0.40-0.94;P=0.03).No significant differences in major vascular complications were found between the two groups(RR=0.95,95%CI:0.77-1.16;P=0.60)and major bleeding(RR=0.90,95%CI:0.72-1.12;P=0.33).All-cause mortality was non-significant between the two groups(RR=0.83,95%CI:0.57-1.20;P=0.32).CONCLUSION Continuation of OAC significantly reduced stroke risk,whereas it showed trends toward lower bleeding and mortality that were not statistically significant.Further large-scale studies are crucial to determine clinical significance.展开更多
Background:Early systemic anticoagulation(SAC)is a common practice in acute necrotizing pancreatitis(ANP),and its impact on in-hospital clinical outcomes had been assessed.However,whether it affects long-term outcomes...Background:Early systemic anticoagulation(SAC)is a common practice in acute necrotizing pancreatitis(ANP),and its impact on in-hospital clinical outcomes had been assessed.However,whether it affects long-term outcomes is unknown.This study aimed to evaluate the effect of SAC on 90-day readmission and other long-term outcomes in ANP patients.Methods:During January 2013 and December 2018,ANP patients admitted within 7 days from the onset of abdominal pain were screened.The primary outcome was 90-day readmission after discharge.Cox proportional-hazards regression model and mediation analysis were used to define the relationship between early SAC and 90-day readmission.Results:A total of 241 ANP patients were enrolled,of whom 143 received early SAC during their hospitalization and 98 did not.Patients who received early SAC experienced a lower incidence of splanchnic venous thrombosis(SVT)[risk ratio(RR)=0.40,95%CI:0.26-0.60,P<0.01]and lower 90-day readmission with an RR of 0.61(95%CI:0.41-0.91,P=0.02)than those who did not.For the quality of life,patients who received early SAC had a significantly higher score in the subscale of vitality(P=0.03)while the other subscales were all comparable between the two groups.Multivariable Cox regression model showed that early SAC was an independent protective factor for 90-day readmission after adjusting for potential confounders with a hazard ratio of 0.57(95%CI:0.34-0.96,P=0.04).Mediation analysis showed that SVT mediated 37.0%of the early SAC-90-day readmission causality.Conclusions:The application of early SAC may reduce the risk of 90-day readmission in the survivors of ANP patients,and reduced SVT incidence might be the primary contributor.展开更多
BACKGROUND:Patients who present to the emergency department(ED)for suspected pulmonary embolism(PE)are often on active oral anticoagulation(AC).However,the diagnostic yield of computed tomography pulmonary angiography...BACKGROUND:Patients who present to the emergency department(ED)for suspected pulmonary embolism(PE)are often on active oral anticoagulation(AC).However,the diagnostic yield of computed tomography pulmonary angiography(CTPA)in screening for PE in patients who present on AC has not been well characterized.We aim to investigate the diagnostic yield of CTPA in diagnosing PE depending on AC status.METHODS:We reviewed and analyzed the electronic medical records of patients who underwent CTPA for PE at a university hospital ED from June 1,2019,to March 25,2022.Primary outcome was the incidence of PE on CTPA depending on baseline AC status and indication for AC.RESULTS:Of 2,846 patients,242 were on AC for a history of venous thromboembolism(VTE),210 were on AC for other indications,and 2,394 were not on AC.The incidence of PE on CTPA was significantly lower in patients on AC for other indications(5.7%)when compared to patients on AC for prior VTE(24.3%)and patients not on AC at presentation(9.8%)(P<0.001).In multivariable analysis among the whole cohort,AC was associated with a positive CTPA(odds ratio[OR]0.26,95%confidence interval[CI]:0.15-0.45,P<0.001).CONCLUSION:The incidence of PE among patients undergoing CTPA in the ED is lower in patients previously on AC for indications other than VTE when compared to those not on AC or those on AC for history of VTE.AC status and indication for AC may affect pre-test probability of a positive CTPA,and AC status therefore warrants consideration as part of future diagnostic algorithms among patients with suspected PE.展开更多
BACKGROUND Venous thromboembolism significantly contributes to patient deterioration and mortality.Management of its etiology and anticoagulation treatment is intricate,necessitating a comprehensive consideration of v...BACKGROUND Venous thromboembolism significantly contributes to patient deterioration and mortality.Management of its etiology and anticoagulation treatment is intricate,necessitating a comprehensive consideration of various factors,including the bleeding risk,dosage,specific anticoagulant medications,and duration of therapy.Herein,a case of lower extremity thrombosis with multiple primary malignant tumors and high risk of bleeding was reviewed to summarize the shortcomings of treatment and prudent anticoagulation experience.CASE SUMMARY An 83-year-old female patient was admitted to the hospital due to a 2-wk history of left lower extremity edema that had worsened over 2 d.Considering her medical history and relevant post-admission investigations,it was determined that the development of left lower extremity venous thrombosis and pulmonary embolism in this case could be attributed to a combination of factors,including multiple primary malignant tumors,iliac venous compression syndrome,previous novel coronavirus infection,and inadequate treatment for prior thrombotic events.However,the selection of appropriate anticoagulant medications,determination of optimal drug dosages,and establishment of an appropriate duration of anticoagulation therapy were important because of concurrent thrombocytopenia,decreased quantitative fibrinogen levels,and renal insufficiency.CONCLUSION Anticoagulant prophylaxis should be promptly initiated in cases of high-risk thrombosis.Individualized anticoagulation therapy is required for complex thrombosis.展开更多
Objective:To analyze the clinical effect of high-dose citrate in segmental extracorporeal anticoagulation for high-throughput hemodialysis.Methods:The subjects included in this study were admitted to the hospital for ...Objective:To analyze the clinical effect of high-dose citrate in segmental extracorporeal anticoagulation for high-throughput hemodialysis.Methods:The subjects included in this study were admitted to the hospital for maintenance hemodialysis treatment from January 2021 to January 2023.All patients had a high risk of bleeding and received 4%trisodium citrate anticoagulant treatment,administered at a rate of 200 mL/h before and after the dialyzer.The anticoagulant effects achieved by the patients were observed and analyzed.Results:The total number of patients who received high-dose segmented citrate extracorporeal anticoagulation dialysis treatment was 50,with each patient undergoing 100 treatments.During the treatment,2 patients had to end the treatment early due to transmembrane pressure exceeding 30 mmHg and an increase in venous pressure exceeding 250 mmHg;the treatment times for these patients were 20 minutes and 200 minutes,respectively.The remaining patients successfully completed the 4-hour treatment.Blood pH and calcium ion concentration in the venous pot were monitored.It was observed that before dialysis,after 2 hours of dialysis,and at the end of dialysis,the blood pH of the patients remained within a relatively normal range.Although some patient levels changed after dialysis,they remained within the normal range.No adverse reactions(such as numbness of the limbs or convulsions)were observed during the anticoagulant treatment.Conclusion:Administering 4%trisodium citrate at a rate of 200 mL/h before and after the dialyzer achieves a good anticoagulant effect,maintains the patient’s blood gas levels within the normal range at the end of dialysis,and causes no adverse reactions.展开更多
Objective:Safe and effective anticoagulation is essential for hemodialysis patients who are at high risk of bleeding.The purpose of this trial is to evaluate the effectiveness and safety of two-stage regional citrate ...Objective:Safe and effective anticoagulation is essential for hemodialysis patients who are at high risk of bleeding.The purpose of this trial is to evaluate the effectiveness and safety of two-stage regional citrate anticoagulation(RCA)combined with sequential anticoagulation and standard calcium-containing dialysate in intermittent hemodialysis(IHD)treatment.Methods:Patients at high risk of bleeding who underwent IHD from September 2019 to May 2021 were prospectively enrolled in 13 blood purification centers of nephrology departments,and were randomly divided into RCA group and saline flushing group.In the RCA group,0.04 g/mL sodium citrate was infused from the start of the dialysis line during blood draining and at the venous expansion chamber.The sodium citrate was stopped after 3 h of dialysis,which was changed to sequential dialysis without anticoagulant.The hazard ratios for coagulation were according to baseline.Results:A total of 159 patients and 208 sessions were enrolled,including RCA group(80 patients,110 sessions)and saline flushing group(79 patients,98 sessions).The incidence of severe coagulation events of extracorporeal circulation in the RCA group was significantly lower than that in the saline flushing group(3.64%vs.20.41%,P<0.001).The survival time of the filter pipeline in the RCA group was significantly longer than that in the saline flushing group((238.34±9.33)min vs.(221.73±34.10)min,P<0.001).The urea clearance index(Kt/V)in the RCA group was similar to that in the saline flushing group with no statistically significant difference(1.12±0.34 vs.1.08±0.34,P=0.41).Conclusions:Compared with saline flushing,the two-stage RCA combined with a sequential anticoagulation strategy significantly reduced extracorporeal circulation clotting events and prolonged the dialysis time without serious adverse events.展开更多
Background:Warfarin is widely regarded as the main anticoagulant in lowering the risk of thromboembolism.This study used indicators to compare pharmacist-managed anticoagulation services,using a well-prepared protocol...Background:Warfarin is widely regarded as the main anticoagulant in lowering the risk of thromboembolism.This study used indicators to compare pharmacist-managed anticoagulation services,using a well-prepared protocol,with physician-managed anticoagulation services・Methods:A retrospective prospective pilot study was conducted to compare patient outcomes before and after transitioning patients to phannacist-managed anticoagulation services,comparing the proportion of those with therapeutic international normalized ratio(INK),subtherapeutic INK,and supratherapeutic INR,as well as their bleeding occurrences as indicators of assuring quality care.Results:A significant improvement in anticoagulation management was noted in the transition to pharmacist-managed anticoagulation services.The proportion of those with subtherapeutic INR decreased from 61.8%to 11.8%(p<0.001),those with supratherapeutic INR decreased from 20.6%to 2.9%(p<0.001),those with therapeutic INR increased from 17.6%to 85.3%(p<0.001),and the occurrence of bleeding decreased from 11.8%to 0.0%,without significant difference in warfarin doses(median from 4 before the transition to 5 after);in addition,the time to reach therapeutic INR decreased from 12-24 weeks to 2-8 weeks after transitioning to pharmacist-managed anticoagulation services.Conclusion:Pharmacist-managed anticoagulation services are considered safer and more effective than physician-managed anticoagulation services alone in terms of patientsJ adherence and satisfaction,which provide an excellent opportunity for quality assurance care.展开更多
AIM:To compare the incidence of early portal or splenic vein thrombosis(PSVT) in patients treated with irregular and regular anticoagulantion after splenectomy with gastroesophageal devascularization.METHODS:We retros...AIM:To compare the incidence of early portal or splenic vein thrombosis(PSVT) in patients treated with irregular and regular anticoagulantion after splenectomy with gastroesophageal devascularization.METHODS:We retrospectively analyzed 301 patients who underwent splenectomy with gastroesophageal devascularization for portal hypertension due to cirrhosis between April 2004 and July 2010.Patients were categorized into group A with irregular anticoagulation and group B with regular anticoagulation,respectively.Group A(153 patients) received anticoagulant monotherapy for an undesignated time period or with aspirin or warfarin without low-molecular-weight heparin(LMWH) irregularly.Group B(148 patients) received subcutaneous injection of LMWH routinely within the first 5 d after surgery,followed by oral warfarin and aspirin for one month regularly.The target prothrombin time/international normalized ratio(PT/INR) was 1.25-1.50.Platelet and PT/INR were monitored.Color Doppler imaging was performed to monitor PSVT as well as the effectiveness of thrombolytic therapy.RESULTS:The patients' data were collected and analyzed retrospectively.Among the patients,94 developed early postoperative mural PSVT,including 63 patients in group A(63/153,41.17%) and 31 patients in group B(31/148,20.94%).There were 50(32.67%) patients in group A and 27(18.24%) in group B with mural PSVT in the main trunk of portal vein.After the administration of thrombolytic,anticoagulant and antiaggregation therapy,complete or partial thrombus dissolution achieved in 50(79.37%) in group A and 26(83.87%) in group B.CONCLUSION:Regular anticoagulation therapy can reduce the incidence of PSVT in patients who undergo splenectomy with gastroesophageal devascularization,and regular anticoagulant therapy is safer and more effective than irregular anticoagulant therapy.Early and timely thrombolytic therapy is imperative and feasible for the prevention of PSVT.展开更多
Acute mesenteric venous thrombosis is potentially lethal because it can result in mesenteric ischemia and,ultimately,bowel infarction requiring surgical intervention.Systemic anticoagulation for the prevention of thro...Acute mesenteric venous thrombosis is potentially lethal because it can result in mesenteric ischemia and,ultimately,bowel infarction requiring surgical intervention.Systemic anticoagulation for the prevention of thrombus propagation is a well-recognized treatment modality and the current mainstay therapy for patients with acute mesenteric venous thrombosis.However,the decision between prompt surgical exploration vs conservative treatment with anticoagulation is somewhat difficult in patients with suspected bowel ischemia.Here we describe a patient with acute mesenteric venous thrombosis who presented with bowel ischemia and was treated with anticoagulation and delayed short-segment bowel resection.展开更多
Continuous renal replacement therapy(CRRT)is widely used for treating critically-ill patients in the emergency department in China.Anticoagulant therapy is needed to prevent clotting in the extracorporeal circulation ...Continuous renal replacement therapy(CRRT)is widely used for treating critically-ill patients in the emergency department in China.Anticoagulant therapy is needed to prevent clotting in the extracorporeal circulation during CRRT.Regional citrate anticoagulation(RCA)has been shown to potentially be safer and more effective,and is now recommended as the preferred anticoagulant method for CRRT.However,there is still a lack of unified standards for RCA management in the world,and there are many problems in using this method in clinical practice.The Emergency Medical Doctor Branch of the Chinese Medical Doctor Association(CMDA)organized a panel of domestic emergency medicine experts and international experts of CRRT to discuss RCA-related issues,including the advantages and disadvantages of RCA in CRRT anticoagulation,the principle of RCA,parameter settings for RCA,monitoring of RCA(mainly metabolic acid-base disorders),and special issues during RCA.Based on the latest available research evidence as well as the paneled experts'clinical experience,considering the generalizability,suitability,and potential resource utilization,while also balancing clinical advantages and disadvantages,a total of 16 guideline recommendations were formed from the experts'consensus.展开更多
Objective:To investigate whether atractylenolide Ⅰ(ATL-Ⅰ) has protective effect on lipopolysaccharide(LPS)-induced disseminated intravascular coagulation(DIC) in vivo and in vitro,and explore whether NF-κB signalin...Objective:To investigate whether atractylenolide Ⅰ(ATL-Ⅰ) has protective effect on lipopolysaccharide(LPS)-induced disseminated intravascular coagulation(DIC) in vivo and in vitro,and explore whether NF-κB signaling pathway is involved in ATL-Ⅰ treatment.Methods:New Zealand white rabbits were injected with LPS through marginal ear vein over a period of 6h at a rate of 600 μg/kg(10 mL/h).Similarly,in the treatment groups,1.0,2.0,or 5.0 mg/kg ATL-Ⅰ were given.Both survival rate and organ function were tested,including the level of alanine aminotransferase(ALT),blood urine nitrogen(BUN),and TNF-α were examined by ELISA.Also haemostatic and fibrinolytic parameters in serum were measured.RAW 264.7 macrophage cells were administered with control,LPS,LPS + ATL-Ⅰ and ATL-Ⅰ alone,and TNF-α,phosphorylation(P)-IκBα,phosphorylation(P)-NF-κB(P65) and NF-κB(P65) were determined by Western blot.Results:The administration of LPS resulted in 73.3%mortality rate,and the increase of serum TNF-α,BUN and ALT levels.When ATL-Ⅰ treatment significantly increased the survival rate of LPS-induced DIC model,also improved the function of blood coagulation.And protein analysis indicated that ATL-Ⅰ remarkably protected liver and renal as decreasing TNF-α expression.In vitro,ATL-Ⅰ obviously decreased LPS-induced TNF-αproduction and the expression of P-NF-κB(P65),with the decrease of P-IκBα.Conclusions:ATL-Ⅰ has protective effect on LPS-induced DIC,which can elevate the survival rate,reduce organ damage,improve the function of blood coagulation and suppress TNF-α expression by inhibiting the activation of NF-κB signaling pathway.展开更多
Thromboembolic complications represent a substantial problem in patients with atrial fibrillation （AF）. The prevalence of AF burden and associated arterial and venous thrombosis progressively increases with age. At ...Thromboembolic complications represent a substantial problem in patients with atrial fibrillation （AF）. The prevalence of AF burden and associated arterial and venous thrombosis progressively increases with age. At the same time, representative national data regarding stroke incidence in AF patients aged 80 and older are limited.展开更多
Background Medication adherence is an integral part of the comprehensive care of patients with atrial fibrillation （AF） receiving oral anticoagulations （OACs） therapy. Many patients with AF are elderly and may suf...Background Medication adherence is an integral part of the comprehensive care of patients with atrial fibrillation （AF） receiving oral anticoagulations （OACs） therapy. Many patients with AF are elderly and may suffer from some form of cognitive impairment. This study was conducted to investigate whether cognitive impairment affects the level of adherence to anticoagulation treatment in AF patients. Me- thods The study involved 111 AF patients （mean age, 73.5±8.3 years） treated with OACs. Cognitive function was assessed using the Mini Mental State Examination （MMSE）. The level of adherence was assessed by the 8-item Mot^sky Medication Adherence Scale （MMAS-8）. Scores on the MMAS-8 range from 0 to 8, with scores 〈 6 reflecting low adherence, 6 to 〈 8 medium adherence, and 8 high adherence. Re- sults 46.9% of AF patients had low adherence, 18.8% had moderate adherence, and 33.3% had high adherence to OACs. Patients with lower adherence were older than those with moderate or high adherence （76.6 ±8.7 vs. 71.3 ~ 6.4 vs. 71.1 ± 6.7 years） and obtained low MMSE scores, indicating cognitive disorders or dementia （MMSE = 22.3 ± 4.2）. Patients with moderate or high adherence obtained high MMSE test results （27.5 ±1.7 and 27,5 ± 3.6）. According to Spearman＇s rank correlation, worse adherence to treatment with OACs was determined by older age （rs = -0.372） and lower MMSE scores （rs = 0.717）. According to multivariate regression analysis, the level of cognitive function was a significant independent predictor of adherence （b = 1.139）. Conclusions Cognitive impairment is an independent determinant of compliance with pharmacological therapy in elderly patients with AF. Lower adherence, beyond the assessment of cognitive function, is related to the age of patients.展开更多
Bleeding is the most important complication of oral anticoagulation (OAC) with vitamin K-antagonists. Whilst bleeding is unavoidably related to OAC, it may have a great impact on the prognosis of treated subjects by l...Bleeding is the most important complication of oral anticoagulation (OAC) with vitamin K-antagonists. Whilst bleeding is unavoidably related to OAC, it may have a great impact on the prognosis of treated subjects by leading to discontinuation of treatment, permanent disability or death. The yearly incidence of bleeding during OAC is 2%-5% for major bleeding, 0.5%-1% for fatal bleeding, and 0.2%-0.4% for intracranial bleeding. While OAC interruption and/or antagonism, as well as administration of coagulation factors, represent the necessary measures for the management of bleeding, proper stratification of the individual risk of bleeding prior to start OAC is of paramount importance. Several factors, including advanced age, female gender, poor control and higher intensity of OAC, associated diseases and medications, as well as genetic factors, have been proven to be associated with an increased risk of bleeding. Most of these factors have been included in the development of bleeding prediction scores, which should now be used by clinicians when prescribing and monitoring OAC. Owing to the many limitations of OAC, including a narrow therapeutic window, cumber-some management, and wide interand intra-individual variability, novel oral anticoagulants, such as factor Xa inhibitors and direct thrombin inhibitors, have been recently developed. These agents can be given in f ixed doses, have little interaction with foods and drugs, and do not require regular monitoring of anticoagulation. While the novel oral anticoagulants show promise for effective thromboprophylaxis in atrial f ibrillation and venous thromboembolism, def initive data on their safety and eff icacy are awaited.展开更多
BACKGROUND Splanchnic vein thrombosis(SVT)is a major complication of moderate and severe acute pancreatitis.There is no consensus on whether therapeutic anticoagulation should be started in patients with acute pancrea...BACKGROUND Splanchnic vein thrombosis(SVT)is a major complication of moderate and severe acute pancreatitis.There is no consensus on whether therapeutic anticoagulation should be started in patients with acute pancreatitis and SVT.AIM To gain insight into current opinions and clinical decision making of pancreatologists regarding SVT in acute pancreatitis.METHODS A total of 139 pancreatologists of the Dutch Pancreatitis Study Group and Dutch Pancreatic Cancer Group were approached to complete an online survey and case vignette survey.The threshold to assume group agreement was set at 75%.RESULTS The response rate was 67%(n=93).Seventy-one pancreatologists(77%)regularly prescribed therapeutic anticoagulation in case of SVT,and 12 pancreatologists(13%)for narrowing of splanchnic vein lumen.The most common reason to treat SVT was to avoid complications(87%).Acute thrombosis was the most important factor to prescribe therapeutic anticoagulation(90%).Portal vein thrombosis was chosen as the most preferred location to initiate therapeutic anticoagulation(76%)and splenic vein thrombosis as the least preferred location(86%).The preferred initial agent was low molecular weight heparin(LMWH;87%).In the case vignettes,therapeutic anticoagulation was prescribed for acute portal vein thrombosis,with or without suspected infected necrosis(82%and 90%),and thrombus progression(88%).Agreement was lacking regarding the selection and duration of long-term anticoagulation,the indication for thrombophilia testing and upper endoscopy,and about whether risk of bleeding is a major barrier for therapeutic anticoagulation.CONCLUSION In this national survey,the pancreatologists seemed to agree on the use of therapeutic anticoagulation,using LMWH in the acute phase,for acute portal thrombosis and in the case of thrombus progression,irrespective of the presence of infected necrosis.展开更多
Hepatic artery thrombosis(HAT) is the most serious vascular complication after liver transplantation. Multiple risk factors have been identified to impact its development. Changes in haemostasis associated with end st...Hepatic artery thrombosis(HAT) is the most serious vascular complication after liver transplantation. Multiple risk factors have been identified to impact its development. Changes in haemostasis associated with end stage liver disease and the disturbance of the coagulation and anticoagulation cascades play an important role in development of this lethal complication. Early recognition and therapeutic intervention is mandatory to avoid its consequences. Pharmacological prophylaxis, by the use of antiplatelet or anticoagulant agents, is an important tool to reduce its incidence and prevent graft loss. Only a few studies have shown a clear benefit of antiplatelet agents in reducing HAT occurrence, however, these studies are limited by being retrospective and by inhomogeneous populations. The use of anticoagulants such as heparin is associated with an improvement in the outcomes mainly when used for a high-risk patients like living related liver recipients. The major concern when using these agents is the tendency to increase bleeding complications in a setting of already unstable haemostasis. Hence, monitoring of their administration and careful selection of patients to be treated are of great importance. Well-designed clinical studies are still needed to further explore their effects and to formulate proper protocols that can be implemented safely.展开更多
In this retrospective cohort study,we aimed to identify the influence of the CYP2C9*3 and CYP4F2 rs2108622 gene alleles on over-anticoagulation and bleeding complications associated with warfarin therapy.A total of 19...In this retrospective cohort study,we aimed to identify the influence of the CYP2C9*3 and CYP4F2 rs2108622 gene alleles on over-anticoagulation and bleeding complications associated with warfarin therapy.A total of 196 patients were included,including 80 males,the mean age was 50.8±10.7 years,and the average follow-up was 26.9±11.8 months.These patients underwent heart valve replacement surgery in the Cardiovascular Surgery of Fujian Provincial Hospital between January 2018 and August 2019,who took warfarin for at least 3 months and had target international normalized ratio(INR)between 1.8 and 2.5.Genotypes of CYP2C9*3 and CYP4F2 rs2108622 genes were tested by polymerase chain reaction(PCR)-gene sequencing technique.SPSS19.0 software was utilized to analyze the association between genotypes and warfarin-related over-anticoagulation and bleeding complications.Of the 434 patient-years,18 severe bleedings and 59 mild ones occurred in 31 patients.Patients with CYP2C9*1/*3 were associated with a higher over-anticoagulation risk compared with the*1/*1 carriers(hazard rate(HR)7.10;95%confidence interval(CI):2.54–19.79,P<0.001).The CYP4F2 rs2108622 mutant genotype did not cause significant increase in bleeding risk(HR 0.89;95%CI:0.43–1.82,P=0.74)or over-anticoagulation(HR 0.43;95%CI:0.16–1.13,P=0.09).Meanwhile,Kaplan-Meier survival curves showed that the time to over-anticoagulation in CYP2C9*1/*3 carriers was significantly shorter compared with the*1/*1 carriers(log-rank test,P<0.001),while that in CYP4F2 rs2108622 mutant genotype patients was longer compared with the wild-type patients(P=0.05).CYP2C9*3 and CYP4F2 rs2108622 might be major predictive factors of over-anticoagulation for warfarin therapy in Chinese patients.展开更多
文摘BACKGROUND Atrial fibrillation(AF)is a prevalent cardiac arrhythmia associated with significant morbidity and mortality,particularly in patients with concomitant renal dysfunction.Anticoagulation therapy reduces the risk of thromboembolic complications in AF but presents challenges in patients with renal impairment due to altered pharmacokinetics and increased bleeding risk.AIM To support clinicians in navigating the complexities of anticoagulation in this high-risk population,ensuring optimal outcomes.METHODS The present review followed PRISMA guidelines.Data extraction was conducted using a standardized template that captured key study characteristics:Population demographics,renal function metrics,anticoagulant dosing strategies,and primary and secondary outcomes.For quality assessment,we employed the Cochrane Risk of Bias 2.0 tool for randomized controlled trials.Observational studies were appraised using the Newcastle-Ottawa Scale.RESULTS We analyze data from 16 studies to provide recommendations on optimal anticoagulation strategies,balancing thrombotic and bleeding risks.Current evidence supports the preferential use of apixaban in moderate chronic kidney disease and cautiously in end-stage renal disease,emphasizing the importance of individualized therapy.CONCLUSION The management of anticoagulation in AF patients with renal dysfunction is challenging but critical for reducing stroke risk.
文摘BACKGROUND The risk and mortality rate of venous thromboembolism(VTE)following gastrointestinal surgery remain high,and the symptoms are atypical.Therefore,it is necessary to identify the risk factors associated with the occurrence of VTE following gastrointestinal surgery and to implement appropriate prevention and treatment measures.AIM To assess the efficacy of perioperative anticoagulation for the prevention of postoperative VTE.METHODS This retrospective study enrolled 205 patients who underwent gastrointestinal surgery.In the observation group(n=101),prophylactic anticoagulation was administered via hypodermic injection of low-molecular-weight heparin during the perioperative period,whereas the control group(n=104)only received lowmolecular-weight heparin treatment postoperatively.Blood coagulation parameters and the incidence of VTE of the bilateral lower limbs pre-and post-surgery were compared between groups.Postoperative VTE was transformed into a dichotomous variable,and influencing factors were explored using multivariate logistic regression analyses.RESULTS On the 7th day postoperatively,the incidence of VTE of the bilateral lower limbs was significantly lower in the observation group than in the control group,as were the D-dimer levels(P<0.05).At 1 month postoperatively,the incidence of VTE was significantly lower in the observation group than in the control group(P<0.05).An age≥65 years,a body mass index≥24 kg/m^(2),and malignant diseases of the digestive system were identified as risk factors for the occurrence of postoperative VTE in patients undergoing gastrointestinal surgery.CONCLUSION The incidence of VTE in patients who underwent gastrointestinal surgery peaked within 1 week postoperatively.The findings confirmed perioperative anticoagulation can safely and effectively reduce the incidence of postoperative VTE.
文摘The management of acute coronary syndrome(ACS)in older patients remains challenging because standard anticoagulants often fail to yield optimal outcomes.Bivalirudin,a direct inhibitor of thrombin,serves as an alternative to traditional therapies.This drug is particularly effective in enhancing myocardial microcircu-lation and reducing adverse events after clinical interventions.The present article explores the findings of a recent study that highlighted the clinical benefits of bivalirudin by investigating its effects on myocardial microcirculation and adverse cardiac events after percutaneous coronary intervention in older patients with ACS.Compared with unfractionated heparin,bivalirudin markedly reduced the emergency response time and improved cardiac function indicators.It further mitigated the risks of cardiovascular events and recurrent myocardial infarctions.These findings suggest that bivalirudin can enhance myocardial perfusion and reduce bleeding complications,thus serving as a safe,effective anticoagulation agent for older patients with ACS.Nonetheless,further large-scale,high-quality trials are needed to establish optimal usage guidelines and assess long-term outcomes.Integrating bivalirudin into ACS treatment protocols for older patients may help optimize patient care,balancing efficacy and safety.Continual research and consensus building are necessary for the widespread clinical application of bivalirudin and the improvement of ACS outcomes in older patients.
文摘BACKGROUND Up to one-third of patients undergoing transcatheter aortic valve replacement(TAVR)have an indication for oral anticoagulation(OAC),primarily due to underlying atrial fibrillation.The optimal approach concerning periprocedural continuation vs interruption of OAC in patients undergoing TAVR remains uncertain,which our meta-analysis aims to address.AIM To explore safety and efficacy outcomes for patients undergoing TAVR,comparing periprocedural continuation vs interruption of OAC therapy.METHODS A literature search was conducted across major databases to retrieve eligible studies that assessed the safety and effectiveness of TAVR with periprocedural continuous vs interrupted OAC.Data were pooled using a random-effects model with risk ratio(RR)and their 95%confidence interval(CI)as effect measures.All statistical analyses were conducted using Review Manager with statistical significance set at P<0.05.RESULTS Four studies were included,encompassing a total of 1813 patients with a mean age of 80.6 years and 49.8%males.A total of 733 patients underwent OAC interruption and 1080 continued.Stroke incidence was significantly lower in the OAC continuation group(RR=0.62,95%CI:0.40-0.94;P=0.03).No significant differences in major vascular complications were found between the two groups(RR=0.95,95%CI:0.77-1.16;P=0.60)and major bleeding(RR=0.90,95%CI:0.72-1.12;P=0.33).All-cause mortality was non-significant between the two groups(RR=0.83,95%CI:0.57-1.20;P=0.32).CONCLUSION Continuation of OAC significantly reduced stroke risk,whereas it showed trends toward lower bleeding and mortality that were not statistically significant.Further large-scale studies are crucial to determine clinical significance.
基金supported by grants from the National Natural Science Foundation of China (82070665 and 81900592)
文摘Background:Early systemic anticoagulation(SAC)is a common practice in acute necrotizing pancreatitis(ANP),and its impact on in-hospital clinical outcomes had been assessed.However,whether it affects long-term outcomes is unknown.This study aimed to evaluate the effect of SAC on 90-day readmission and other long-term outcomes in ANP patients.Methods:During January 2013 and December 2018,ANP patients admitted within 7 days from the onset of abdominal pain were screened.The primary outcome was 90-day readmission after discharge.Cox proportional-hazards regression model and mediation analysis were used to define the relationship between early SAC and 90-day readmission.Results:A total of 241 ANP patients were enrolled,of whom 143 received early SAC during their hospitalization and 98 did not.Patients who received early SAC experienced a lower incidence of splanchnic venous thrombosis(SVT)[risk ratio(RR)=0.40,95%CI:0.26-0.60,P<0.01]and lower 90-day readmission with an RR of 0.61(95%CI:0.41-0.91,P=0.02)than those who did not.For the quality of life,patients who received early SAC had a significantly higher score in the subscale of vitality(P=0.03)while the other subscales were all comparable between the two groups.Multivariable Cox regression model showed that early SAC was an independent protective factor for 90-day readmission after adjusting for potential confounders with a hazard ratio of 0.57(95%CI:0.34-0.96,P=0.04).Mediation analysis showed that SVT mediated 37.0%of the early SAC-90-day readmission causality.Conclusions:The application of early SAC may reduce the risk of 90-day readmission in the survivors of ANP patients,and reduced SVT incidence might be the primary contributor.
文摘BACKGROUND:Patients who present to the emergency department(ED)for suspected pulmonary embolism(PE)are often on active oral anticoagulation(AC).However,the diagnostic yield of computed tomography pulmonary angiography(CTPA)in screening for PE in patients who present on AC has not been well characterized.We aim to investigate the diagnostic yield of CTPA in diagnosing PE depending on AC status.METHODS:We reviewed and analyzed the electronic medical records of patients who underwent CTPA for PE at a university hospital ED from June 1,2019,to March 25,2022.Primary outcome was the incidence of PE on CTPA depending on baseline AC status and indication for AC.RESULTS:Of 2,846 patients,242 were on AC for a history of venous thromboembolism(VTE),210 were on AC for other indications,and 2,394 were not on AC.The incidence of PE on CTPA was significantly lower in patients on AC for other indications(5.7%)when compared to patients on AC for prior VTE(24.3%)and patients not on AC at presentation(9.8%)(P<0.001).In multivariable analysis among the whole cohort,AC was associated with a positive CTPA(odds ratio[OR]0.26,95%confidence interval[CI]:0.15-0.45,P<0.001).CONCLUSION:The incidence of PE among patients undergoing CTPA in the ED is lower in patients previously on AC for indications other than VTE when compared to those not on AC or those on AC for history of VTE.AC status and indication for AC may affect pre-test probability of a positive CTPA,and AC status therefore warrants consideration as part of future diagnostic algorithms among patients with suspected PE.
文摘BACKGROUND Venous thromboembolism significantly contributes to patient deterioration and mortality.Management of its etiology and anticoagulation treatment is intricate,necessitating a comprehensive consideration of various factors,including the bleeding risk,dosage,specific anticoagulant medications,and duration of therapy.Herein,a case of lower extremity thrombosis with multiple primary malignant tumors and high risk of bleeding was reviewed to summarize the shortcomings of treatment and prudent anticoagulation experience.CASE SUMMARY An 83-year-old female patient was admitted to the hospital due to a 2-wk history of left lower extremity edema that had worsened over 2 d.Considering her medical history and relevant post-admission investigations,it was determined that the development of left lower extremity venous thrombosis and pulmonary embolism in this case could be attributed to a combination of factors,including multiple primary malignant tumors,iliac venous compression syndrome,previous novel coronavirus infection,and inadequate treatment for prior thrombotic events.However,the selection of appropriate anticoagulant medications,determination of optimal drug dosages,and establishment of an appropriate duration of anticoagulation therapy were important because of concurrent thrombocytopenia,decreased quantitative fibrinogen levels,and renal insufficiency.CONCLUSION Anticoagulant prophylaxis should be promptly initiated in cases of high-risk thrombosis.Individualized anticoagulation therapy is required for complex thrombosis.
文摘Objective:To analyze the clinical effect of high-dose citrate in segmental extracorporeal anticoagulation for high-throughput hemodialysis.Methods:The subjects included in this study were admitted to the hospital for maintenance hemodialysis treatment from January 2021 to January 2023.All patients had a high risk of bleeding and received 4%trisodium citrate anticoagulant treatment,administered at a rate of 200 mL/h before and after the dialyzer.The anticoagulant effects achieved by the patients were observed and analyzed.Results:The total number of patients who received high-dose segmented citrate extracorporeal anticoagulation dialysis treatment was 50,with each patient undergoing 100 treatments.During the treatment,2 patients had to end the treatment early due to transmembrane pressure exceeding 30 mmHg and an increase in venous pressure exceeding 250 mmHg;the treatment times for these patients were 20 minutes and 200 minutes,respectively.The remaining patients successfully completed the 4-hour treatment.Blood pH and calcium ion concentration in the venous pot were monitored.It was observed that before dialysis,after 2 hours of dialysis,and at the end of dialysis,the blood pH of the patients remained within a relatively normal range.Although some patient levels changed after dialysis,they remained within the normal range.No adverse reactions(such as numbness of the limbs or convulsions)were observed during the anticoagulant treatment.Conclusion:Administering 4%trisodium citrate at a rate of 200 mL/h before and after the dialyzer achieves a good anticoagulant effect,maintains the patient’s blood gas levels within the normal range at the end of dialysis,and causes no adverse reactions.
基金the 1.3.5 Project for Disciplines of Excellence from West China Hospital of Sichuan University(No.ZYGD18027)。
文摘Objective:Safe and effective anticoagulation is essential for hemodialysis patients who are at high risk of bleeding.The purpose of this trial is to evaluate the effectiveness and safety of two-stage regional citrate anticoagulation(RCA)combined with sequential anticoagulation and standard calcium-containing dialysate in intermittent hemodialysis(IHD)treatment.Methods:Patients at high risk of bleeding who underwent IHD from September 2019 to May 2021 were prospectively enrolled in 13 blood purification centers of nephrology departments,and were randomly divided into RCA group and saline flushing group.In the RCA group,0.04 g/mL sodium citrate was infused from the start of the dialysis line during blood draining and at the venous expansion chamber.The sodium citrate was stopped after 3 h of dialysis,which was changed to sequential dialysis without anticoagulant.The hazard ratios for coagulation were according to baseline.Results:A total of 159 patients and 208 sessions were enrolled,including RCA group(80 patients,110 sessions)and saline flushing group(79 patients,98 sessions).The incidence of severe coagulation events of extracorporeal circulation in the RCA group was significantly lower than that in the saline flushing group(3.64%vs.20.41%,P<0.001).The survival time of the filter pipeline in the RCA group was significantly longer than that in the saline flushing group((238.34±9.33)min vs.(221.73±34.10)min,P<0.001).The urea clearance index(Kt/V)in the RCA group was similar to that in the saline flushing group with no statistically significant difference(1.12±0.34 vs.1.08±0.34,P=0.41).Conclusions:Compared with saline flushing,the two-stage RCA combined with a sequential anticoagulation strategy significantly reduced extracorporeal circulation clotting events and prolonged the dialysis time without serious adverse events.
文摘Background:Warfarin is widely regarded as the main anticoagulant in lowering the risk of thromboembolism.This study used indicators to compare pharmacist-managed anticoagulation services,using a well-prepared protocol,with physician-managed anticoagulation services・Methods:A retrospective prospective pilot study was conducted to compare patient outcomes before and after transitioning patients to phannacist-managed anticoagulation services,comparing the proportion of those with therapeutic international normalized ratio(INK),subtherapeutic INK,and supratherapeutic INR,as well as their bleeding occurrences as indicators of assuring quality care.Results:A significant improvement in anticoagulation management was noted in the transition to pharmacist-managed anticoagulation services.The proportion of those with subtherapeutic INR decreased from 61.8%to 11.8%(p<0.001),those with supratherapeutic INR decreased from 20.6%to 2.9%(p<0.001),those with therapeutic INR increased from 17.6%to 85.3%(p<0.001),and the occurrence of bleeding decreased from 11.8%to 0.0%,without significant difference in warfarin doses(median from 4 before the transition to 5 after);in addition,the time to reach therapeutic INR decreased from 12-24 weeks to 2-8 weeks after transitioning to pharmacist-managed anticoagulation services.Conclusion:Pharmacist-managed anticoagulation services are considered safer and more effective than physician-managed anticoagulation services alone in terms of patientsJ adherence and satisfaction,which provide an excellent opportunity for quality assurance care.
基金Supported by Grants from Beijing Municipal Health Bureau,No.2011-2-18
文摘AIM:To compare the incidence of early portal or splenic vein thrombosis(PSVT) in patients treated with irregular and regular anticoagulantion after splenectomy with gastroesophageal devascularization.METHODS:We retrospectively analyzed 301 patients who underwent splenectomy with gastroesophageal devascularization for portal hypertension due to cirrhosis between April 2004 and July 2010.Patients were categorized into group A with irregular anticoagulation and group B with regular anticoagulation,respectively.Group A(153 patients) received anticoagulant monotherapy for an undesignated time period or with aspirin or warfarin without low-molecular-weight heparin(LMWH) irregularly.Group B(148 patients) received subcutaneous injection of LMWH routinely within the first 5 d after surgery,followed by oral warfarin and aspirin for one month regularly.The target prothrombin time/international normalized ratio(PT/INR) was 1.25-1.50.Platelet and PT/INR were monitored.Color Doppler imaging was performed to monitor PSVT as well as the effectiveness of thrombolytic therapy.RESULTS:The patients' data were collected and analyzed retrospectively.Among the patients,94 developed early postoperative mural PSVT,including 63 patients in group A(63/153,41.17%) and 31 patients in group B(31/148,20.94%).There were 50(32.67%) patients in group A and 27(18.24%) in group B with mural PSVT in the main trunk of portal vein.After the administration of thrombolytic,anticoagulant and antiaggregation therapy,complete or partial thrombus dissolution achieved in 50(79.37%) in group A and 26(83.87%) in group B.CONCLUSION:Regular anticoagulation therapy can reduce the incidence of PSVT in patients who undergo splenectomy with gastroesophageal devascularization,and regular anticoagulant therapy is safer and more effective than irregular anticoagulant therapy.Early and timely thrombolytic therapy is imperative and feasible for the prevention of PSVT.
文摘Acute mesenteric venous thrombosis is potentially lethal because it can result in mesenteric ischemia and,ultimately,bowel infarction requiring surgical intervention.Systemic anticoagulation for the prevention of thrombus propagation is a well-recognized treatment modality and the current mainstay therapy for patients with acute mesenteric venous thrombosis.However,the decision between prompt surgical exploration vs conservative treatment with anticoagulation is somewhat difficult in patients with suspected bowel ischemia.Here we describe a patient with acute mesenteric venous thrombosis who presented with bowel ischemia and was treated with anticoagulation and delayed short-segment bowel resection.
文摘Continuous renal replacement therapy(CRRT)is widely used for treating critically-ill patients in the emergency department in China.Anticoagulant therapy is needed to prevent clotting in the extracorporeal circulation during CRRT.Regional citrate anticoagulation(RCA)has been shown to potentially be safer and more effective,and is now recommended as the preferred anticoagulant method for CRRT.However,there is still a lack of unified standards for RCA management in the world,and there are many problems in using this method in clinical practice.The Emergency Medical Doctor Branch of the Chinese Medical Doctor Association(CMDA)organized a panel of domestic emergency medicine experts and international experts of CRRT to discuss RCA-related issues,including the advantages and disadvantages of RCA in CRRT anticoagulation,the principle of RCA,parameter settings for RCA,monitoring of RCA(mainly metabolic acid-base disorders),and special issues during RCA.Based on the latest available research evidence as well as the paneled experts'clinical experience,considering the generalizability,suitability,and potential resource utilization,while also balancing clinical advantages and disadvantages,a total of 16 guideline recommendations were formed from the experts'consensus.
基金funded by grants from the Science and Technology Planning Project of Guangdong Province(2014A020211022)Science and Technology Planning Project of Guangzhou Province(201510010074)
文摘Objective:To investigate whether atractylenolide Ⅰ(ATL-Ⅰ) has protective effect on lipopolysaccharide(LPS)-induced disseminated intravascular coagulation(DIC) in vivo and in vitro,and explore whether NF-κB signaling pathway is involved in ATL-Ⅰ treatment.Methods:New Zealand white rabbits were injected with LPS through marginal ear vein over a period of 6h at a rate of 600 μg/kg(10 mL/h).Similarly,in the treatment groups,1.0,2.0,or 5.0 mg/kg ATL-Ⅰ were given.Both survival rate and organ function were tested,including the level of alanine aminotransferase(ALT),blood urine nitrogen(BUN),and TNF-α were examined by ELISA.Also haemostatic and fibrinolytic parameters in serum were measured.RAW 264.7 macrophage cells were administered with control,LPS,LPS + ATL-Ⅰ and ATL-Ⅰ alone,and TNF-α,phosphorylation(P)-IκBα,phosphorylation(P)-NF-κB(P65) and NF-κB(P65) were determined by Western blot.Results:The administration of LPS resulted in 73.3%mortality rate,and the increase of serum TNF-α,BUN and ALT levels.When ATL-Ⅰ treatment significantly increased the survival rate of LPS-induced DIC model,also improved the function of blood coagulation.And protein analysis indicated that ATL-Ⅰ remarkably protected liver and renal as decreasing TNF-α expression.In vitro,ATL-Ⅰ obviously decreased LPS-induced TNF-αproduction and the expression of P-NF-κB(P65),with the decrease of P-IκBα.Conclusions:ATL-Ⅰ has protective effect on LPS-induced DIC,which can elevate the survival rate,reduce organ damage,improve the function of blood coagulation and suppress TNF-α expression by inhibiting the activation of NF-κB signaling pathway.
文摘Thromboembolic complications represent a substantial problem in patients with atrial fibrillation （AF）. The prevalence of AF burden and associated arterial and venous thrombosis progressively increases with age. At the same time, representative national data regarding stroke incidence in AF patients aged 80 and older are limited.
文摘Background Medication adherence is an integral part of the comprehensive care of patients with atrial fibrillation （AF） receiving oral anticoagulations （OACs） therapy. Many patients with AF are elderly and may suffer from some form of cognitive impairment. This study was conducted to investigate whether cognitive impairment affects the level of adherence to anticoagulation treatment in AF patients. Me- thods The study involved 111 AF patients （mean age, 73.5±8.3 years） treated with OACs. Cognitive function was assessed using the Mini Mental State Examination （MMSE）. The level of adherence was assessed by the 8-item Mot^sky Medication Adherence Scale （MMAS-8）. Scores on the MMAS-8 range from 0 to 8, with scores 〈 6 reflecting low adherence, 6 to 〈 8 medium adherence, and 8 high adherence. Re- sults 46.9% of AF patients had low adherence, 18.8% had moderate adherence, and 33.3% had high adherence to OACs. Patients with lower adherence were older than those with moderate or high adherence （76.6 ±8.7 vs. 71.3 ~ 6.4 vs. 71.1 ± 6.7 years） and obtained low MMSE scores, indicating cognitive disorders or dementia （MMSE = 22.3 ± 4.2）. Patients with moderate or high adherence obtained high MMSE test results （27.5 ±1.7 and 27,5 ± 3.6）. According to Spearman＇s rank correlation, worse adherence to treatment with OACs was determined by older age （rs = -0.372） and lower MMSE scores （rs = 0.717）. According to multivariate regression analysis, the level of cognitive function was a significant independent predictor of adherence （b = 1.139）. Conclusions Cognitive impairment is an independent determinant of compliance with pharmacological therapy in elderly patients with AF. Lower adherence, beyond the assessment of cognitive function, is related to the age of patients.
文摘Bleeding is the most important complication of oral anticoagulation (OAC) with vitamin K-antagonists. Whilst bleeding is unavoidably related to OAC, it may have a great impact on the prognosis of treated subjects by leading to discontinuation of treatment, permanent disability or death. The yearly incidence of bleeding during OAC is 2%-5% for major bleeding, 0.5%-1% for fatal bleeding, and 0.2%-0.4% for intracranial bleeding. While OAC interruption and/or antagonism, as well as administration of coagulation factors, represent the necessary measures for the management of bleeding, proper stratification of the individual risk of bleeding prior to start OAC is of paramount importance. Several factors, including advanced age, female gender, poor control and higher intensity of OAC, associated diseases and medications, as well as genetic factors, have been proven to be associated with an increased risk of bleeding. Most of these factors have been included in the development of bleeding prediction scores, which should now be used by clinicians when prescribing and monitoring OAC. Owing to the many limitations of OAC, including a narrow therapeutic window, cumber-some management, and wide interand intra-individual variability, novel oral anticoagulants, such as factor Xa inhibitors and direct thrombin inhibitors, have been recently developed. These agents can be given in f ixed doses, have little interaction with foods and drugs, and do not require regular monitoring of anticoagulation. While the novel oral anticoagulants show promise for effective thromboprophylaxis in atrial f ibrillation and venous thromboembolism, def initive data on their safety and eff icacy are awaited.
文摘BACKGROUND Splanchnic vein thrombosis(SVT)is a major complication of moderate and severe acute pancreatitis.There is no consensus on whether therapeutic anticoagulation should be started in patients with acute pancreatitis and SVT.AIM To gain insight into current opinions and clinical decision making of pancreatologists regarding SVT in acute pancreatitis.METHODS A total of 139 pancreatologists of the Dutch Pancreatitis Study Group and Dutch Pancreatic Cancer Group were approached to complete an online survey and case vignette survey.The threshold to assume group agreement was set at 75%.RESULTS The response rate was 67%(n=93).Seventy-one pancreatologists(77%)regularly prescribed therapeutic anticoagulation in case of SVT,and 12 pancreatologists(13%)for narrowing of splanchnic vein lumen.The most common reason to treat SVT was to avoid complications(87%).Acute thrombosis was the most important factor to prescribe therapeutic anticoagulation(90%).Portal vein thrombosis was chosen as the most preferred location to initiate therapeutic anticoagulation(76%)and splenic vein thrombosis as the least preferred location(86%).The preferred initial agent was low molecular weight heparin(LMWH;87%).In the case vignettes,therapeutic anticoagulation was prescribed for acute portal vein thrombosis,with or without suspected infected necrosis(82%and 90%),and thrombus progression(88%).Agreement was lacking regarding the selection and duration of long-term anticoagulation,the indication for thrombophilia testing and upper endoscopy,and about whether risk of bleeding is a major barrier for therapeutic anticoagulation.CONCLUSION In this national survey,the pancreatologists seemed to agree on the use of therapeutic anticoagulation,using LMWH in the acute phase,for acute portal thrombosis and in the case of thrombus progression,irrespective of the presence of infected necrosis.
文摘Hepatic artery thrombosis(HAT) is the most serious vascular complication after liver transplantation. Multiple risk factors have been identified to impact its development. Changes in haemostasis associated with end stage liver disease and the disturbance of the coagulation and anticoagulation cascades play an important role in development of this lethal complication. Early recognition and therapeutic intervention is mandatory to avoid its consequences. Pharmacological prophylaxis, by the use of antiplatelet or anticoagulant agents, is an important tool to reduce its incidence and prevent graft loss. Only a few studies have shown a clear benefit of antiplatelet agents in reducing HAT occurrence, however, these studies are limited by being retrospective and by inhomogeneous populations. The use of anticoagulants such as heparin is associated with an improvement in the outcomes mainly when used for a high-risk patients like living related liver recipients. The major concern when using these agents is the tendency to increase bleeding complications in a setting of already unstable haemostasis. Hence, monitoring of their administration and careful selection of patients to be treated are of great importance. Well-designed clinical studies are still needed to further explore their effects and to formulate proper protocols that can be implemented safely.
基金Startup Fund for scientific research,Fujian Medical University (Grant No. 2017XQ010)Beijing Medical and Health Fou ndation (Grant No. B183023),China。
文摘In this retrospective cohort study,we aimed to identify the influence of the CYP2C9*3 and CYP4F2 rs2108622 gene alleles on over-anticoagulation and bleeding complications associated with warfarin therapy.A total of 196 patients were included,including 80 males,the mean age was 50.8±10.7 years,and the average follow-up was 26.9±11.8 months.These patients underwent heart valve replacement surgery in the Cardiovascular Surgery of Fujian Provincial Hospital between January 2018 and August 2019,who took warfarin for at least 3 months and had target international normalized ratio(INR)between 1.8 and 2.5.Genotypes of CYP2C9*3 and CYP4F2 rs2108622 genes were tested by polymerase chain reaction(PCR)-gene sequencing technique.SPSS19.0 software was utilized to analyze the association between genotypes and warfarin-related over-anticoagulation and bleeding complications.Of the 434 patient-years,18 severe bleedings and 59 mild ones occurred in 31 patients.Patients with CYP2C9*1/*3 were associated with a higher over-anticoagulation risk compared with the*1/*1 carriers(hazard rate(HR)7.10;95%confidence interval(CI):2.54–19.79,P<0.001).The CYP4F2 rs2108622 mutant genotype did not cause significant increase in bleeding risk(HR 0.89;95%CI:0.43–1.82,P=0.74)or over-anticoagulation(HR 0.43;95%CI:0.16–1.13,P=0.09).Meanwhile,Kaplan-Meier survival curves showed that the time to over-anticoagulation in CYP2C9*1/*3 carriers was significantly shorter compared with the*1/*1 carriers(log-rank test,P<0.001),while that in CYP4F2 rs2108622 mutant genotype patients was longer compared with the wild-type patients(P=0.05).CYP2C9*3 and CYP4F2 rs2108622 might be major predictive factors of over-anticoagulation for warfarin therapy in Chinese patients.
